Clipper-sharpener



Paten-ted Nov. 29, |898. W. BAUR @L W. C. REUSS. Y

CLIPPER SHARPENER. (Application med Feb. 11, 1897.)

(No Model.)

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NITED STATES PATENT' Ormea'.

IVILLIAM BAUR AND WILLIAM C. REUSS, OF CHICAGO, ILLINOIS.

CLlPPER-SHARPENER.

SPECIFICATION forming part of v Letters Patent No. 614,822, datedNovember 29, 1898.

Application filed February 11, 1897. Serial No. 622,951. (No model.)

Tol all whom t may concern.-

Be it known that we, WILLIAM BAUR and WILLIAM C. REUss, citizens of theUnited States, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in Clipper-Sharpeners, which are fully set forth in the following specification,reference being had to the accompanying drawings, in which- Figure l isa side elevation. Fig. 2 is a top or plan view of the same. Fig. 3 isavertical sectional view of the upper portion of the machine, taken onthe line 3 3 of Fig. 2. Fig. 4 is a front elevation of the upper portionof the machine as shown in Fig. l, look- Y ing to the right. bladedetached.

The object of our invention is to make a clipper-sharpener adapted toreceive and hold a clipper-blade in contact with a grindingsurface tosharpen the clipper.

Ve have invented a machine that can be used by any unskilled person, whodetaches from the clipper the clipper-blade and places it in a holder inthe machine, which holder holds the blade in yielding contact with thegrinding-surface, the operator simply turning a crank to give motion tothe grinding-surface of the clipper-blade.

In the accompanying drawings, A represents the base of theclipper-Sharpener; B, an upright piece, preferably made of metal andstrengthened by a rib C. This upright is firmlysecured to the base by aplate D and screw-bolts E.

F is a vertical shaft carrying a beveled gearwheel G and a horizontalgrinding-disk H, which is rigidly secured to the shaft and revolves withit. The upper portion of the upright B has a horizontal arm I, whichcarries a set-screw J, with a conical end, which makes the upper bearingK for the shaft F. This arm I is bifurcated at its free end, so that theholdingblock L will pass between the two members of the arm. The arm Ialso carries a frame M, in which are secured the springs N.

O is the thumb-piece or knob attached to a plate P, to which are securedtwo vertical rods R, which are secured at their lower ends to a plate S.The coiled springs N surround these vertical rods attached to the plateS, their upper ends resting against the plate T at vthe top Fig. 5 is aview of a clipperof the frame M. The plate T and the plate P movetogether longitudinally, sliding one above and one below the top plateP', in which there is a slot T to allow the pins R to pass, whichconnect the plate T with the plate S.

There are also guides G, on which the plate T rests and on which it canmove back and forth. This enables the operator to move the blade backand forth on the sharpening-disk as it is being sharpened. The purposeof the springs is to cause a yielding pressure to be applied on the topof the holding-block L, which holds the clipper-blade U in contact withthe grinding-disk H. The clipper-blades have a notch V and a groove IV,and we make the holding-block L so that its edge fits the groove lV andthe projection X passes through the notch V. The holdin g-block and theclipper-blade are then passed between the bifurcated ends of the arm Iunder the plate S. The springs above said plate hold the clipperbladeagainst the surface of the grinding-disk.

a, is a crank, on the end of whose shaft b there is a cogged wheel c,which engages with the cogged wheel d, which is rigidly secured to ashaft e, which carries a beveled wheel f. This beveled Wheel engageswith the beveled pinion G and revolves the shaft F, which carries thegrinding-disk H. The shaft b has a long bearing g, lwhich is secured tothe upright B by screw-bolts h. The shaft c has a long bearing c', whichis secured to the upright B by screw-boltsj. The shaft b passes throughthe upright B, and there is a washer 7c between the crank a, which issecured to the shaft by the pin l, and the upright B. This washer andthe hub of the cogged wheel c hold the shaft in its bearing-box g. Thelower bearing or step m of the shaft F is upon the bottom plate D of theframe of the machine, as clearly shown in Fig. l, and the shaft F isheld between the step and the bearing-screw J. By inserting the shaft cin its bearing before the vertical shaft F is put into position thebeveled gear-wheels hold this shaft in its bearing-box c'.

The operation of our machine is as follows: The clipper-blade U which itis desired to sharpen is taken from the clipper, and the holding-block Lis placed in position on the clipper-blade, and together they are passedover the grinding-disk I-I, the holding-block IOO L resting between thetwo members of the bifurcated arm I under the pressure-plate S, thelower side of the clipper-blade resting upon the grinding-disk Il, asclearly shown in Figs. 3 and 4. IVe have shown on the top edge of theholding-block L two lugs n n and also two small sockets in the lowerends of the pins R R, which rest on those lugs to retain theholding-block, which holds the clipper-blade more securely in positionwhile it is being sharpened. When the clipper-blade is placed inposition, the operator then turns the crank, which revolves thegrinding-disk I-I and sharpens the clipper-blade.

It is important in sharpening clipper-blades to have the blade slightlyconcave between its ends, so that the ends of the blades when placed inthe clipper-frame will touch first, and then by securing` it at itscenter it will always have a firm contact throughout its length. Togrind the clipper-blade in this form, we make the surface of thegrindingdisk which contacts with the clipper-blade slightly beveledupward from near its periphery toward its center, or, in other words,slightly beveled upward on a radial line with the disk. This curvature,however, is so slight that we have not attempted to illustrate it in thedrawings. As the clipper-blade is held on a radial line relatively withthe disk, this slightly-curved surface of the disk keeps the clipper inits slightly-concave form, which is important in sharpeningclipperblades.

It will bc observed that thc clipper-blade holder in holding theclipper-blade in position to be ground can be held either by a spring ofany well-known kind or by such other device as will admit of its havinga yielding pressure. It is essential that it should be held firmly incontact with the grinding-disk, but at the same time have a yieldingpressure against the disk, so that it will adapt itself to thesharpening-surface. We make the grinding-disk of any material adapted togrind or sharpen edge-tools.

IIavin g fully described the construction and operation of ourinvention,what we claim, and desire to secure by Letters Patent, is

1. In a grinding implement, the combination of the grinding-disk andmeans for rotating it, with the slotted arm I carrying the casing M, anda sliding frame mounted in said casin g for holding the blade andreciprocating it over the surface of the disk, substantially asdescribed.

2. In a grinding implement, the combination of the grinding-disk andmeans for rotating it, with the slotted arm I carrying the casing M, inwhich are mounted the plates P and T yieldingly connected by the sp1-ing-surrounded posts R, and mechanism for holding the blade to be ground,substantially as described.

3. In a grinding implement, the combination of the grinding-disk andmeans forrotating it, with the slotted arm I carrying the casing M, inwhich are mounted the plates l and T yieldingly connected by thespring-su rrounded posts R cooperating with the plate L for holding theblade to be ground, substantially as shown and described.

WILLIAM BAUR. `WILLIAM C. REUSS.

IVitnes'ses:

A. A. MURRAY, FLORA BRoM.

